The Communication industry in Nigeria was thrown into the Quality of Service challenges as a result of rapid growth of mobile users with their increases in the demand for mobile communication application services. Most often in this country, the outages are high which leads to total network failures, block calls, drop calls. All these are as a result of poor signal strength at the receiving end. This research was aimed at minimizing outage probability in mobile network using beamforming adaptive antenna array system. To achieve this goal, the number of outages was measured at a specified period. A beamforming antenna was designed so as to enhance signal reception. An LMS algorithm was developed for the antenna for signal tracking and acquisition. A model for minimizing the outage probability in the network using adaptive beamforming antenna was then developed and simulated in MATLAB Environment. Results obtained showed that the outage probability is lower with adaptive beamforming antenna and also the BER curve was better with beamforming technique.